公开(公告)号：US20250056958A1

公开(公告)日：2025-02-13

申请号：US18632190

申请日：2024-04-10

Applicant: Samsung Display Co., LTD.

Inventor： Yun Ku JUNG ,  Yunhyuk KO ,  Won-Jun PARK ,  Chul Soon PARK ,  Seonhui BAEK ,  Sooho LEE ,  Jungho JO ,  Chang Yeol HAN

IPC: H10K50/115 ,  B82Y40/00 ,  C09K11/02 ,  C09K11/88

Abstract: A quantum dot complex according to an embodiment comprises a quantum dot; and a ligand bound to a surface of the quantum dot, wherein the surface of the quantum dot is provided with a plurality of coupling parts to which the ligand is bound; wherein the plurality of coupling parts include a first coupling part and a second coupling part. The ligand includes a first ligand bound to the first coupling part and a second ligand bound to the second coupling part, wherein the second ligand includes a halogen element. The halogen element is contained in an amount of 1 at % to 12 at % to the total content of the quantum dot complex.

公开(公告)号：US20250063885A1

公开(公告)日：2025-02-20

申请号：US18750963

申请日：2024-06-21

Applicant: Samsung Display Co., LTD.

Inventor： YUNKU JUNG ,  SOOHO LEE ,  Jungho JO ,  Chang Yeol HAN ,  YUNHYUK KO ,  SEHUN KIM

IPC: H10K50/16 ,  C09D11/037 ,  C09K11/06 ,  H10K50/115 ,  H10K50/165 ,  H10K85/30

Abstract: A light emitting element of an embodiment includes a first electrode, a hole transport region on the first electrode, an emission layer on the hole transport region, an electron transport region on the emission layer, and a second electrode on the electron transport region, the electron transport region includes a nanoparticle including a nanoparticle core and a ligand, the nanoparticle core includes a core compound represented by Formula 1, and the ligand is bonded to the surface of the nanoparticle core and represented by Formula 2 or Formula 3.

公开(公告)号：US20250075124A1

公开(公告)日：2025-03-06

申请号：US18796960

申请日：2024-08-07

Applicant: Samsung Display Co., Ltd.

Inventor： Jungho JO ,  SANGYEOP LEE ,  SOOHO LEE ,  YUNKU JUNG ,  Chang Yeol HAN

IPC: C09K11/66 ,  B82Y30/00 ,  C09D11/38 ,  C09K11/02 ,  H10K50/115 ,  H10K50/16 ,  H10K50/17 ,  H10K102/00

Abstract: A light-emitting element includes a first electrode, a functional layer disposed on the first electrode, and a second electrode disposed on the functional layer, wherein the functional layer includes a nanoparticle, the nanoparticle includes a core and a ligand, the core includes at least one of a first core compound represented by Formula 1 below, a second core compound represented by Formula 2 below, or a third core compound represented by Formula 3 below, and thus the light-emitting element has improved lifespan and efficiency. Sn4+1-xSn2+xO2-x  Formula 1 Sn4+1-yCu+2yO2-y  Formula 2 Sn4+1-zNi2+zO2-z  Formula 3

公开(公告)号：US20240179936A1

公开(公告)日：2024-05-30

申请号：US18353507

申请日：2023-07-17

Applicant: Samsung Display Co., Ltd. ,  Hongik University Industry-Academia Cooperation Foundation

Inventor： Chang Yeol HAN ,  Heesun YANG ,  Suk-Young YOON

IPC: H10K50/16 ,  H10K50/115 ,  H10K59/12 ,  H10K59/35

CPC classification number: H10K50/16 ,  H10K50/115 ,  H10K59/1201 ,  H10K59/35

Abstract: Embodiments provide a light emitting element that includes a first electrode, a second electrode disposed on the first electrode, a light emitting layer disposed between the first electrode and the second electrode and including a quantum dot, a hole transport region disposed between the first electrode and the light emitting layer, and an electron transport layer disposed between the light emitting layer and the second electrode, wherein the electron transport layer includes an electron transport material, and the electron transport material includes a metal oxide particle, and a bicarbonate coupled to a surface of the metal oxide particle.